This EPC Contract involved replacement of the existing inlet works and an upgrade of the sludge dewatering facilities, including new centrifuges, feed pumps, polymer dosing, cake handling systems and a new odour control system. Early into design, we identified an opportunity to provide multiple operational, financial and safety benefits by rearranging plant layouts. Our innovative design:
Peel Common WwTW treats wastewater from the Fareham and Gosport catchments in Hampshire, with a total population equivalent of 250,000.
Sludge Dewatering: three Alfa Laval centrifuges were provided, the installation being designed to provide maximum ease of operation and allowance for future expansion.
Sludge Feed: New dedicated feed pumps were installed and tested whilst existing press feed pumps remained in service.
Polymer make-up, storage and dosing: Designed to be installed in two phases to ensure continuing dosing capability.
Cake collection system: Comprising six fully enclosed and odour controlled, auto sequenced RORO containers.
Odour Control Unit: Two-stage bio-scrubber and secondary carbon filter.
MCC: Designed, installed and commissioned by our Automation Control & Technology division. Overall plant control achieved utilising PLC, HMI and SCADA.
Inlet Works: New Inlet Screens, incorporating a late change in design flow requirement. Combined wash compactors and screenings launder. Our design team created a fully automated trap chute connecting to the existing removal conveyor, reducing operator intervention.
Collaboration with Operations and our supply chain led to a highly successful contract. The client was so impressed with the outcome that various elements of the installation are now to be used as a ‘template’ for future works.